suse有那些服务是必须的哪些是可以关闭的？

我的服务多的头皮发麻，想关闭一些又不知道哪些能关那些不能，有许多都没有man 手册的，晕
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 2204 712 ? Ss 15:23 0:00 init [5]
root 2 0.0 0.0 0 0 ? S 15:23 0:00 [kthreadd]
root 3 0.0 0.0 0 0 ? S 15:23 0:00 [migration/0]
root 4 0.0 0.0 0 0 ? S 15:23 0:00 [ksoftirqd/0]
root 5 0.0 0.0 0 0 ? S 15:23 0:00 [watchdog/0]
root 6 0.0 0.0 0 0 ? S 15:23 0:00 [migration/1]
root 7 0.0 0.0 0 0 ? S 15:23 0:00 [ksoftirqd/1]
root 8 0.0 0.0 0 0 ? S 15:23 0:00 [watchdog/1]
root 9 0.0 0.0 0 0 ? S 15:23 0:00 [events/0]
root 10 0.0 0.0 0 0 ? S 15:23 0:00 [events/1]
root 11 0.0 0.0 0 0 ? S 15:23 0:00 [cpuset]
root 12 0.0 0.0 0 0 ? S 15:23 0:00 [netns]
root 13 0.0 0.0 0 0 ? S 15:23 0:00 [async/mgr]
root 14 0.0 0.0 0 0 ? S 15:23 0:00 [pm]
root 15 0.0 0.0 0 0 ? S 15:23 0:00 [sync_supers]
root 16 0.0 0.0 0 0 ? S 15:23 0:00 [bdi-default]
root 17 0.0 0.0 0 0 ? S 15:23 0:00 [kintegrityd/0]
root 18 0.0 0.0 0 0 ? S 15:23 0:00 [kintegrityd/1]
root 19 0.0 0.0 0 0 ? S 15:23 0:00 [kblockd/0]
root 20 0.0 0.0 0 0 ? S 15:23 0:00 [kblockd/1]
root 21 0.0 0.0 0 0 ? S 15:23 0:00 [kacpid]
root 22 0.0 0.0 0 0 ? S 15:23 0:00 [kacpi_notify]
root 23 0.0 0.0 0 0 ? S 15:23 0:00 [kacpi_hotplug]
root 24 0.0 0.0 0 0 ? S 15:23 0:00 [kseriod]
root 27 0.0 0.0 0 0 ? S 15:23 0:00 [kondemand/0]
root 28 0.0 0.0 0 0 ? S 15:23 0:00 [kondemand/1]
root 29 0.0 0.0 0 0 ? S 15:23 0:00 [khelper]
root 30 0.0 0.0 0 0 ? S 15:23 0:00 [khungtaskd]
root 31 0.0 0.0 0 0 ? S 15:23 0:00 [kswapd0]
root 32 0.0 0.0 0 0 ? SN 15:23 0:00 [ksmd]
root 33 0.0 0.0 0 0 ? S 15:23 0:00 [aio/0]
root 34 0.0 0.0 0 0 ? S 15:23 0:00 [aio/1]
root 35 0.0 0.0 0 0 ? S 15:23 0:00 [crypto/0]
root 36 0.0 0.0 0 0 ? S 15:23 0:00 [crypto/1]
root 38 0.0 0.0 0 0 ? S 15:23 0:00 [kpsmoused]
root 69 0.0 0.0 0 0 ? S 15:23 0:00 [ata/0]
root 70 0.0 0.0 0 0 ? S 15:23 0:00 [ata/1]
root 71 0.0 0.0 0 0 ? S 15:23 0:00 [ata_aux]
root 76 0.0 0.0 0 0 ? S 15:23 0:00 [scsi_eh_0]
root 77 0.0 0.0 0 0 ? S 15:23 0:00 [scsi_eh_1]
root 78 0.0 0.0 0 0 ? S 15:23 0:00 [scsi_eh_2]
root 81 0.0 0.0 0 0 ? S 15:23 0:00 [scsi_eh_3]
root 159 0.0 0.0 0 0 ? S 15:23 0:00 [khubd]
root 253 0.0 0.0 0 0 ? S 15:23 0:00 [i915]
root 262 0.0 0.0 0 0 ? S 15:23 0:00 [usbhid_resumer]
root 333 0.0 0.0 0 0 ? S 15:24 0:00 [jbd2/sda7-8]
root 334 0.0 0.0 0 0 ? S 15:24 0:00 [ext4-dio-unwrit]
root 335 0.0 0.0 0 0 ? S 15:24 0:00 [ext4-dio-unwrit]
root 341 0.0 0.0 0 0 ? S 15:24 0:00 [flush-8:0]
root 467 0.0 0.1 2804 1092 ? Sroot 637 0.0 0.0 0 0 ? S 15:24 0:00 [hd-audio0]
root 743 0.0 0.0 0 0 ? S 15:24 0:00 [kstriped]
root 1255 0.0 0.0 1892 568 ? Ss 15:24 0:00 /sbin/acpid
101 1287 0.0 0.1 3288 1312 ? Ss 15:24 0:00 /bin/dbus-daemon --system
root 1410 0.0 0.0 0 0 ? S 15:24 0:00 [kconservative/0]
root 1411 0.0 0.0 0 0 ? S 15:24 0:00 [kconservative/1]
105 1416 0.0 0.4 15748 4780 ? Ssl 15:24 0:00 /usr/sbin/hald --daemon=yes
root 1420 0.0 0.2 20104 2892 ? Sl 15:24 0:00 /usr/sbin/console-kit-daemon --no-daemon
root 1510 0.0 0.1 3888 1220 ? S 15:24 0:00 hald-runner
root 1656 0.0 0.1 3968 1032 ? S 15:24 0:00 hald-addon-input: Listening on /dev/input/event0 /dev/input/event1 /dev/input/event2
root 1659 0.0 0.0 4096 676 ? Ss 15:24 0:00 /usr/bin/kdm
root 1689 7.6 2.4 51456 24896 tty7 Ss+ 15:24 3:22 /usr/bin/Xorg -br :0 vt7 -nolisten tcp -auth /var/lib/xdm/authdir/authfiles/A:0-nKruCa
root 1711 0.0 0.1 3980 1036 ? S 15:24 0:00 /usr/lib/hal/hald-addon-cpufreq
105 1712 0.0 0.0 3744 872 ? S 15:24 0:00 hald-addon-acpi: listening on acpid socket /var/run/acpid.socket
root 1717 0.0 0.1 3968 1032 ? S 15:24 0:00 hald-addon-storage: polling /dev/sr0 (every 2 sec)
root 1777 0.0 0.0 1928 392 ? Ss 15:24 0:00 /sbin/ifplugd -i eth0 -r /etc/sysconfig/network/scripts/ifplugd-selectif -f -I -b
root 1948 0.0 0.1 5032 1556 ? S 15:24 0:00 -:0
root 1950 0.0 0.0 0 0 ? S 15:24 0:00 [kauditd]
1000 2049 0.0 0.1 4720 1316 ? Ss 15:24 0:00 /bin/sh /usr/bin/startkde
1000 2763 0.0 0.8 72988 9196 ? Ss 15:24 0:01 /usr/lib/scim-1.0/scim-launcher -d -c simple -e all -f socket --no-stay
root 2852 0.0 0.0 2280 52 ? Ss 15:24 0:00 /sbin/dhcpcd --netconfig -L -E -HHH -c /etc/sysconfig/network/scripts/dhcpcd-hook -t 0 -h linux-s9n2 eth0
root 3105 0.0 0.1 36560 1096 ? Sl 15:24 0:00 /sbin/rsyslogd -c 5 -f /etc/rsyslog.conf
root 3155 0.0 0.0 2352 680 ? Ss 15:24 0:00 /sbin/rpcbind
root 3157 0.0 0.0 10800 468 ? S1000 3173 0.0 0.0 17212 472 ? Ss 15:24 0:00 /usr/lib/scim-1.0/scim-helper-manager
1000 3174 0.2 1.0 48384 10712 ? Ssl 15:24 0:06 /usr/lib/scim-1.0/scim-panel-gtk --display :0.0 -c socket -d --no-stay
1000 3176 0.0 0.1 62808 1028 ? Ss 15:24 0:00 /usr/lib/scim-1.0/scim-launcher -d -c socket -e socket -f x11
1000 3243 0.0 0.0 3668 320 ? S 15:24 0:00 dbus-launch --sh-syntax --exit-with-session
1000 3244 0.0 0.1 3160 1036 ? Ss 15:24 0:00 /bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
root 3251 0.0 0.0 1744 20 ? S 15:24 0:00 /usr/lib/kde4/libexec/start_kdeinit +kcminit_startup
1000 3252 0.0 0.9 70168 9320 ? Ss 15:24 0:00 kdeinit4: kdeinit4 Running...
1000 3253 0.0 0.6 73156 6840 ? S 15:24 0:00 kdeinit4: klauncher [kdeinit] --fd=9
1000 3255 0.0 1.4 98776 14960 ? S 15:24 0:00 kdeinit4: kded4 [kdeinit]
1000 3260 0.0 0.0 1880 192 ? S 15:24 0:00 kwrapper4 ksmserver
1000 3261 0.0 1.0 101720 10924 ? Sl 15:24 0:00 kdeinit4: ksmserver [kdeinit]
1000 3281 4.1 2.9 277604 30356 ? S 15:24 1:48 kwin -session 10152c8e1ae000128688053900000042530000_1287634657_393781
1000 3306 0.0 1.1 94760 11868 ? S 15:24 0:00 kdeinit4: kglobalaccel [kdeinit]
root 3389 0.0 0.0 1900 292 ? Ss 15:24 0:00 /usr/sbin/nscd
avahi 3403 0.0 0.1 2912 1248 ? Ss 15:24 0:00 avahi-daemon: running [linux-s9n2.local]
root 3429 0.0 0.1 2800 1048 ? S< 15:24 0:00 /sbin/udevd --daemon
root 3430 0.0 0.1 2800 1048 ? S< 15:24 0:00 /sbin/udevd --daemon
root 3682 0.0 0.1 3900 1380 ? Ss 15:24 0:00 /usr/lib/postfix/master
1000 3690 0.0 0.1 62412 1188 ? S 15:24 0:01 scim-bridge
root 3710 0.0 0.0 2212 604 ? Ss 15:24 0:00 /usr/sbin/cron
1000 3746 0.5 4.0 301648 41824 ? S 15:24 0:15 kdeinit4: plasma-desktop [kdeinit]
1000 3748 0.0 2.1 145768 21948 ? Sl 15:24 0:01 /usr/bin/knotify4
root 3829 0.0 0.0 2172 668 tty1 Ss+ 15:24 0:00 /sbin/mingetty --noclear tty1
root 3830 0.0 0.0 2172 668 tty2 Ss+ 15:24 0:00 /sbin/mingetty tty2
root 3831 0.0 0.0 2172 668 tty3 Ss+ 15:24 0:00 /sbin/mingetty tty3
root 3832 0.0 0.0 2172 668 tty4 Ss+ 15:24 0:00 /sbin/mingetty tty4
root 3833 0.0 0.0 2172 672 tty5 Ss+ 15:24 0:00 /sbin/mingetty tty5
root 3834 0.0 0.0 2172 672 tty6 Ss+ 15:24 0:00 /sbin/mingetty tty6
1000 3854 0.0 0.4 71656 5080 ? S 15:24 0:00 kdeinit4: kio_file [kdeinit] file local:/tmp/ksocket-linux-opensuse/klauncherMT3253.slave-socket local:/tmp/ksocke
1000 3856 0.0 0.9 92760 9724 ? S 15:24 0:00 kdeinit4: kaccess [kdeinit]
1000 3864 0.1 2.4 291636 24692 ? S 15:24 0:03 kdeinit4: krunner [kdeinit]
1000 3866 0.0 1.8 273444 18900 ? S 15:24 0:00 kdeinit4: kmix [kdeinit] -session 10152c8e1ae000128688055200000042530012_1287634657_360131
1000 3872 0.0 1.2 97180 12712 ? S 15:24 0:00 kdeinit4: klipper [kdeinit]
1000 3873 0.0 1.2 61556 12332 ? S 15:24 0:00 /usr/lib/kde4/libexec/polkit-kde-authentication-agent-1
1000 3874 0.0 1.7 82264 17644 ? S 15:24 0:00 /usr/bin/kupdateapplet
root 3880 0.0 0.3 7536 3660 ? S 15:24 0:00 /usr/lib/polkit-1/polkitd
1000 3975 0.0 0.2 15400 2436 ? S 15:25 0:00 /usr/lib/kde4/libexec/kdesud
root 4074 0.0 0.0 3560 508 ? S 15:25 0:00 dbus-launch --autolaunch d896c8c1c9ac56e72642577c00000427 --binary-syntax --close-stderr
root 4075 0.0 0.0 2680 604 ? Ss 15:25 0:00 /bin/dbus-daemon --fork --print-pid 5 --print-address 7 --session
1000 6633 0.1 2.4 187188 25316 ? Sl 15:26 0:03 kdeinit4: konsole [kdeinit]
1000 6635 0.0 0.2 5244 2240 pts/1 Ss 15:26 0:00 /bin/bash
root 6702 0.0 0.1 4736 1476 pts/1 S 15:27 0:00 su
root 6703 0.0 0.2 5248 2236 pts/1 S 15:27 0:00 bash
at 8291 0.0 0.0 2196 320 ? Ss 15:48 0:00 /usr/sbin/atd
postfix 8516 0.0 0.1 3872 1164 ? S 15:48 0:00 pickup -l -t fifo -u
postfix 8517 0.0 0.1 4048 1700 ? S 15:48 0:00 qmgr -l -t fifo -u
1000 8987 0.0 0.1 4716 1316 ? S 15:57 0:00 /bin/sh /usr/bin/firefox
1000 8992 8.6 8.1 354288 83192 ? Sl 15:57 0:57 /usr/lib/firefox/firefox
1000 8996 0.0 0.2 6712 2668 ? S 15:57 0:00 /usr/lib/GConf/2/gconfd-2
1000 9008 0.0 1.5 66956 15376 ? S 15:57 0:00 /usr/lib/mozilla/kmozillahelper
1000 9011 0.1 1.9 91092 19920 ? Sl 15:57 0:00 /usr/bin/SUSEgreeter -caption openSUSE -icon SUSEgreeter
1000 9034 0.1 1.7 89952 17428 ? Sl 15:57 0:00 /usr/lib/xulrunner-1.9.2.10/plugin-container /usr/lib/browser-plugins/libflashplayer.so 8992 plugin true